| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that, when operating the phase of an output voltage of an inverter in order to control a torque of a motor generator, it is difficult to maintain high controllability thereof. <P>SOLUTION: A phase setting part 34 sets a phase δ of an output voltage vector of an inverter on the basis of the difference between a required torque Td and an estimated torque Te. A norm calculating part 36a sets a norm Vn1 of the output voltage vector of the inverter on the basis of an electrical-angle speed ω of a motor generator and the required torque Td. A norm correcting part 36b calculates a correction amount Vncor of the norm Vn1 in order to feedback-control the phase of an actual current to the phase of a command current. An adder 36c corrects the norm Vn1 by the correction amount Vncor. An operation-signal generating part 38 searches for an operation-signal waveform corresponding to a voltage utilization factor calculated on the basis of an input voltage (a power supply voltage VDC) and a norm Vn of the inverter. <P>COPYRIGHT: (C)2010,JPO&INPIT |
